Abstract
THE specification of most modern broadcasting receivers contains an imposing list of titles describing the various thermionic valves employed in the set. The simple terms, ‘high-frequency amplifying’, ‘detector’ and ‘low-frequency amplifying’, are now no longer sufficient to describe the type of valve and its function in a wireless receiver; and one is led to speculate whether those investigators who were responsible for the introduction of the terms ‘diode’ and ‘triode,’ about sixteen years ago, envisaged the possibility of the octode as a manufacturing proposition in 1934. In the presence of such attainments, it is useful to review the developments which have led to such a complicated valve. Such a review, with special reference to the technique of the manufacture of receiving valves on a mass-production basis, was made by Mr. S. R. Mullard in his chairman's address to the Wireless Section of the Institution of Electrical Engineers on November 7 last.
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Development of the Modern Broadcast Receiving Valve. Nature 135, 54–55 (1935). https://doi.org/10.1038/135054a0
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DOI: https://doi.org/10.1038/135054a0